Open-hearth furnace.



S. E. MEYERS.

OPEN HEARTH FURNACE.

APPLICATION FILED IBB.10,1909.

Patented Feb. 15, 1910.

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MM 62x74 flfluw S. E. MBYERS.

I OPEN HEARTH FURNACE.

APPLICATION FILED r1112. 10,1909.

949, 1 92. Patented Feb. 15, 1910.

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J? 26 A W Wm M S. E. MBYERS.

OPEN HEARTH FURNACE.

APPLICATION FILED FEB.10.1909.

Patented Feb. 15, 1910.

4 SHEETS-SHEET 3.

S. E. MEYERS.

OPEN HEARTH FURNACE.

APPLICATION FILED IEB.10.1|09 949, 1 92, Patented Feb. 15, 1910.

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SAMUEL E. MEYERS, OF ST. LOUIS; MISSOURI.

OPEN-HEARTH FURNACE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed February 10, 1909. Serial No. 477,246.

11 all whom it may concern:

Be it known that I, SAMUEL E. Mnrnas, a citizen of the. United States,and resident of St. Louis, Missouri, have invented certain new anduseful Improvements in Openliearth Furnaces, of which the following is aspecification.

This invention relates to improvements in open-hearth furnaces, and hasregard to that type of'furnace wherein ore or mineral is smelted by anover-draft heat, the heat of the particles of combustion passingdownwardly through passages and upwardly through a checker-generator andthen out throu h a flue into the chimney.

A further object of my invention is the construction of a furnace havingtwo combined heat and air passages, one located on each end of thefurnace, and in each passage is built a checker-generator and aplurality of bridge walls whereby the heat, while passing through onechamber, is deflected upwardly through the checker-gem erator while theair passing from the valve takes its circuit through the oppositepassage passing downwardly through the checker-generator and beingsuperheated before entering into the furnace.

In the drawings--Figure 1 is a side elevation of my invention.- Fig. 2is a crosssectional view taken on the line 2-2 of Fig. 1. Fig. 3 is alongitudinal sectional Fig. at is a horizontal sectional view ta n theline 4-4 of Fig. 1. Fl 5 is a horizontal sectional view taken on t 1eline 5-5 of Fig. 3. Fig. (5 is an enlarged detail sectional view of thevalve made use of in connection with my improved furnace.

In the construction of my invention I provide a suitable housing (3 in'which is located the furnace 7 and in the bottom of the furnace islocated the smelting basin 8. Thisbasin is supported in the usual mannerand lined with fire-brick of the usual form, and in the same, aftersuitable fire has been placed therein, mineral is distributed and theexcessive heat is ap'plied over the top of the-basin by means of theburners 9. These burners are located in the walls of the housing and thefuel used by said burners is oil under an air blast.

The smelting basin 8 is supported on the risers 10 and on the two endsof the housing are built the combined heat and air "passage compartments11 and 12. In each of the compartments 11 and 12 is formed the passa e13' in which'are located the bridge walls 14, 15 and 16; the wall 14being so located as to form the steps 17 between the top of said walland the roof 18 of the compartment. The bridge wall 15 extendsdownwardly from the roof parallel to the wall 14 and a short distancetherefrom, forming a passage or carbon-chamber 19 through which the heatpasses downwardly into a horizontal passage 20' located beneath thechecker-generator 21. The bridge wall 16 is constructed similar to thewall 14, forming a passage 22 between the top thereof and the roof ofthe compartment, and is located a suitable distance from the rear wall23, formin the passage 24 to which is connected t e line 25, this flueconnecting the compartments 11 and 1-2.

The checker-generator is built between the bridge walls 15 and 16 and isconstructed of firebrick one brick built upon the other in zi g-zagfashion, so as to form small passages through which the heat passes onits travel from the furnace to the chimney; and while passing throughthis generator, the bricks forming the same are excessively heated andthe particles of carbon or soot which are carried during the circulationcontact with the under surface of the brick and are permitted to fallinto the sub-passage or pit 20 and can be removed through thedoor-openings 26.

The essential feature of my invention is the arrangen'icnt andconstruction of the combined heat and air passages extending from thefurnace to the chimney, as heretofore the passages arranged in such afurnace have been so built as to permit the heat passing from thefurnace to circulate downuuirdly through the checker-generator, which,in this instance, permits the carbon and soot to lodge upon the top ofthe brick forming the checker-generator, and in a very short time thepassages between the brick, by means of the lodging of the carbon andsoot, are caused to be closed and the draft interrupted. Whenever thisoccurs, it is necessary to wreck this portion of the furnace in order tocleanse the same and the checker-generator in this instance must bere-built. In the construction as shown in my invention this diflicultyis obviated because the particles of carbon and soot fall from theircontact position into the sub-passage 'and the same can be removed atwill without Wrecking any portion of the furnace. I

In the flue which connects the compartments 11 and 12 is located a valve27, as shown in Fig. 6, which constitutes a hood 28 provided with adamper 29 operated from the exterior by the lever 30. The top of thevalveis provided with a cap 31 which is raised and lowered from its seat32 to regulate the intake of air and in order to provide the propercirculation into the flue so as to admit the air into one compartmentandthen another alternately, I provide in the flue partition walls 33between which is formed the chimney fine 34 leading rearwardly andconnected to the chimney or smoke-stack 35.

The operation of my invention is as follows: After the furnace has beenproperly ignited and the mineral placed in the basic, the-chamber 29 inthe valve 28 ;is so regulated as to permit the circulation of heat topass downwardly through the passages located in the housing whichconnect with the slag pocket 13, permitting the heat to circuit over thebridge wall 14, down through the passage or carbon-chamber 19, under thebridge wall 15 into the sub-passage 20 and.

up through the checker-generator, depositing its particles of carbon andsoot at the bottom of the generator, theheat then passing over thebridge wall 16, downwardly through the passage 24 and into the flue 25,through the valve and into the chimney flue 34 and out. During thisoperation only one of the passages is used at a time and that for aperiod of about fifteen minutes so as not to burn out the checkergenerator on account of the excessive heat. While the heat is passingthrough one compartment,

the air is admitted throughthe opposite comupwardly through thechecker-generator in- I stead of downwardly.

Having thus fully described my invention, what I claim as new and desireto have secured to me by the grant of Letters Patcut, is: v I

1. An open-hearth furnace comprising a housing; a furnace; a smeltingbasin located in the furnace; the housing on both sides of thefurnaceprovided with a combined heat and air passage at each end; a slag pocketlocated beneath each of said passages; a bridge wall located adjacenteach of said slagpockets extending upwardly and terminatlng near its topand forming a passage and carbon-chamber at its rear; :1 second bridgewall located to the rear of the first mentioned bridge wall extendingdownwardly terminating near the bottom and forming the rear wall of thecarbon-chamher; a third bridge wall located in each of the compartmentsextending upwardly and terminating near the top of the compartment; achecker-generator located in each compartment between the second andthird mentioned bridge walls; a horizontal passage located beneath thechecker-generator; clean-out doors communicating with the severalpassages for removing sediment; a flue locatedto the rear of thechecker-generators, and a valve located in the flue for regulating thecirculation in the compartment,

substantially as specified.

2. An open-hearth furnace comprising a housing; a furnace; a smeltingbasin'centrally located in said housings; passages located in thehousing at each. side of the smelting basin; slag pockets located'ineach of said passages to separate and catch the slag passing downwardlythrough the passages connecting the slag pocket with the furnacechamber; a carbon-chamber located to the rear off-the slag pocket andarranged to catch the carbon which separates .itself from the slag as itpasses through the course ofcirculation; a checker-generator located tothe rear of the carbon-chamber and so arranged as to permit the draft tocirculate upwardly therethrough; a flue passage located at the rear ofthe checker-generator,

connecting the'same with the smoke-stack of the furnace; a valve forregulating the circulation of air in either one of the compartments, andclean-out doors arrangedin the several passages for removing the carbon

